Please review: [Bug 527848] make sure db upgrade to 4.7 and later works correctly

[Noriko Hosoi]

https://bugzilla.redhat.com/show_bug.cgi?id=527848

Subject: make sure db upgrade to 4.7 and later works correctly

Proposed Fix:
https://bugzilla.redhat.com/attachment.cgi?id=395003&action=diff

Change Description:
https://bugzilla.redhat.com/attachment.cgi?id=395003&action=edit

Thanks,
--noriko